I am splicing a resistor to an existing wire (cancelling the CANBUS blown-bulb warning after fitting LED's).

 

Both ends of the wire are either attached to plastic gromits or connectors so I can't slide any heat shrink tubes onto the wire.

 

Is there another way to water proof the splice?

 

Thanks!

you can get certain types of heatshrink which are impregnated with a glue which comes out when its heated. get a big bit and cut down its length then fit it over the joints.

 

I dont know if that is of any use to you. 

 

If you can get some, and arrange the splice into a squashed Y shape, you can put a big bit of heat shrink over the entire splice and shrink it down. so you have two connections at one end and one at the other. Just make sure you have plenty of overlap as it will shrink and you could have a gap if you are not careful.

effectively cut out a section and form a sort of Y connector with three bits of wire then you can feed heat shrink over each bit.

 

If you can work out what I mean.

Thanks Trundlenut,

 

I did think of that but wasn't sure if after slicing the heat shrink along its full length it would shrink properly?

You could use some silicone sealant, if you can leave the wires in a suitable position until the sealant cures.

That could be a plan.

 

I guess I'm suprised there isn't a more conventional solution for heat shrinking a three-way splice!

 

I've found some heat shrink tape which may work...

I would usually make a full cut and then solder the three back together so that I can use heat-shrink over the joint. The other option is self amalgamating tape.

Agreed, cut and solder, anything else will just cause a problem later.

Thanks guys, I didn't want to cut the original wiring if I could help it but I can see the advantage in terms of getting a water proof covering of heat shrink.

 

My wire strippers don't go down far enough to strip the small diameter wire so can I remove the plastic coating using my soldering iron instead?

 

Get a stanley knife, hold it upside down so the sharp side of the blade is pointed up and gently roll the wire along it with your thumb.

 

Alternatively, go through your plier collection, there's normally a small gap just above the hinge that is great for this sort of job.

Just to finish off this thread, thanks for all the advice. Using a sharp knife and rolling the wire over it with my thumb worked a treat.

 

I also cut the original wire for a better three-way splice. This allowed me to get the heat-shrink on which really made the job look neat and tidy.

 

Thanks to you all for the help and advice!

 

 

 

 

Nice Job Silver